旁路耦合微束等离子弧增材制造
发布时间：2018-09-13 07:04
【摘要】：在分析旁路耦合电弧焊的基础上,提出了旁路耦合微束等离子弧焊(DE-MPAW)方法.该方法以微束等离子弧焊炬为主路,填充焊丝为旁路,通过可调电阻调节旁路电流大小.在不降低成形效率的基础上,减小成形件的热输入,从而有利于电弧增材制造.在此基础上开展了DE-MPAW焊接方法的初步研究.在DE-MPAW焊实验系统及测控的基础上,对比研究了不同旁路电流下DE-MPAW焊熔滴过渡情况;分析了母材热输入随旁路电流的变化规律,研究了焊缝成形的变化情况;初步开展了DE-MPAW增材制造单道多层的堆垛研究.结果表明:随着旁路电流的增大,其熔滴过渡频率、母材热输入、熔深都相应地减小,且DE-MPAW方法能够较好适用于增材制造.
[Abstract]:Based on the analysis of by-pass coupled arc welding (BCAW), a bypass coupled microbeam plasma arc welding (DE-MPAW) method is proposed. In this method, the micro beam plasma arc welding torch is used as the main path, the wire is filled as the bypass circuit, and the bypass current is adjusted by adjustable resistance. On the basis of not reducing the forming efficiency, the heat input of the formed parts is reduced, which is beneficial to the arc material increasing manufacture. On this basis, the preliminary study of DE-MPAW welding method is carried out. On the basis of DE-MPAW welding experimental system and measurement and control, the droplet transfer of DE-MPAW welding under different bypass currents is studied, and the variation law of base metal heat input with bypass current is analyzed, and the variation of weld forming is studied. The stacking research of single channel and multi-layer for DE-MPAW material increasing manufacture was carried out. The results show that with the increase of bypass current, the droplet transfer frequency, the heat input of base metal and the penetration depth decrease correspondingly, and the DE-MPAW method can be applied to fabricate the material.
【作者单位】： 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室;
【基金】：国家自然科学基金项目(51665034) 国家重点基础研究发展规划(973)前期专项(2014CB660810) 兰州理工大学红柳青年人才培养计划(Q201202)资助
【分类号】：TG661
[Abstract]:Based on the analysis of by-pass coupled arc welding (BCAW), a bypass coupled microbeam plasma arc welding (DE-MPAW) method is proposed. In this method, the micro beam plasma arc welding torch is used as the main path, the wire is filled as the bypass circuit, and the bypass current is adjusted by adjustable resistance. On the basis of not reducing the forming efficiency, the heat input of the formed parts is reduced, which is beneficial to the arc material increasing manufacture. On this basis, the preliminary study of DE-MPAW welding method is carried out. On the basis of DE-MPAW welding experimental system and measurement and control, the droplet transfer of DE-MPAW welding under different bypass currents is studied, and the variation law of base metal heat input with bypass current is analyzed, and the variation of weld forming is studied. The stacking research of single channel and multi-layer for DE-MPAW material increasing manufacture was carried out. The results show that with the increase of bypass current, the droplet transfer frequency, the heat input of base metal and the penetration depth decrease correspondingly, and the DE-MPAW method can be applied to fabricate the material.
【作者单位】： 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室;
【基金】：国家自然科学基金项目(51665034) 国家重点基础研究发展规划(973)前期专项(2014CB660810) 兰州理工大学红柳青年人才培养计划(Q201202)资助
【分类号】：TG661
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